Vulcanizer



Lg-Ian. 10, 1.9 33.

H. C. BOSTWICK VULCANIZER Filed Sept. 19, 1929 6 Sheets-Sheet l ]/v VENmp, 1 /9/9 2 Burn/c Ban/24w ATTORNEYJ Jan. 10, 1933. c, BOSTWICK1,894,017

VULCANIZER Filed Sept. 19, 1929 6 Sheets-Sheet 2 INVENTOR.

A'NR) I C'- Fasrmc 6 Sheets-Sheet 5 H. C. BOSTWICK VULCANIZER FiledSept. 19, 1929 ATTORNEYS.

IN VEN TOR A e/m C Basra/ck Jan. 10, 1933.

Jan. 10, 1933. H. c. BOSTWICK VULCANIZER Filed Sept. 19, 1929 6Sheets-Sheet 4 INVENTOR. C BMT'IY/CK.

ATTURNEYAY H. c. BosTwicK 1,894,017

VULCANIZER Jan. 10, 1933.

Filed Sept. 19, .1929 6 Sheets-Sheet 5 INVENTOR. A/ENR) C nsrhl -K ATTORNEYJ,

Jan. 10', 1933. H. c. BOSTWICK ,8

VULCANIZER Filed Sept. 19 1929 6 Sheets-Sheet 6 INVENTOR. A ax/Ry (fBusy-nic ATTORNEYS Patented Jan. 10, 1933 UNITED STATES PATENT OFFICEHENRY C. BOSTWICK, OF AKRON, OHIO, ASSIGNOR TO THE AKRON STANDARD MOLDGOMTPANY, 0;? AKRON, OHIO, A CORPOBATION'OF OHIO VULCANIZER Applicationfiled September 19, 1929. Serial Ito/393,694.

This invention relates to vulcanizers such Figure 7 is a section on line7 a of F igas used in the manufacture of tires and inner tubes therefor.The invention, in part, is acontinuation of my co-pending applicationfor Letters Patent, Serial No. 284,996, filed June 13, 1928. I

The general purpose of the invention is to provide a simple, compactvulcanizer unit including relatively movable sections, such as hingedsections, and improved means for locking the sections together.

A particular object of the invention is to provide in combination withsuch locking means, a means for exerting heavy pressure on thevulcanizing sectionsto insure effective seating ofthe mold sections oneach other.

7 A further object of the invention is to provide in combination withthe locking device, a means for inflating a tube or the like in themold.

A further object of the invention is to provide automatic operating andcontrol means for operating and controlling the vulcanizer throughout acuring cycle from the time the vulcanizer is closed with the article tobe vulcanized therein, the vulcanizer opening automatically at thecompletion of a cure.

The foregoing and other objects are at tained in the vulcanizer shown inthe accompanying drawings and more fully described below. It is to beunderstood that the invention is not limited tothe specific form thereofshown and described.

Of the accompanying drawings, which show the vulcanizer during a curingoperation, 7 g

Figure 1 is a side elevation of a tube vulcanize'r embodying theinvention;

Figure 2 is asection on line 22 of Figure 1;

Figure 3 is a right end elevation thereof as shown in Figure 1;

Figure 4. is a section on line 44 of Figure 2; V

' Figure 5 is an enlarged sectional plan on line 55 of Figure 1; 1 p

Figure 6 is a top plan viewot the actuating and control device;

Figure 7 is a section on line 7-7 of Figure 6; I Y

ure 7 1 7 Figure 7" is a section through the fourway control valve alongline 7 b of Figure 7;

' Figure 8 is a section on line 88 of F igure 6.

Figure 9 is a front view of the timer comprising a part of the actuatingand control means.

Figure 10 is a section on line 10-10 of Figure 6.

Figure 11 is a section on line 1111 of Figure 10.

Figure 12 is a piping diagram showing the connections of the actuatingand control mechanism with thevarious actuating cylinders, certaincontrol valves in said connectime Figure 13 is a diametral sectionthrough a head of the vulcanizer door actuating cylinder.

Referring to the drawings, the numeral 10 designates a suitable standardon which is mounted a vulcanizing unit comprising a fixed section 11 anda hinged section or door 12, the hinges being at 13, 13 on a member 14which may be integral with section 11 whereby the sections arerelatively movable V to and from mating relation.

The vulcanizer is arranged to replaceably receive different types andsizes of molds, a

- seriesot' concentric grooves 15, 15 and 16, 16

being provided opposite each other in the sectionsll and 12 respectivelyto receive circumferential tongues 15 and 16 respectively on matingmold'sections 18 and 19, here shown as an inneritube mold. The moldsections 18 and 19 are chambered as indicated at 18 and 19 for thereception of a vulcanizing medium such as steam, steam and drainconnections to these chambers being provided by piping 18 and 18 and 19'and 19, the piping 19 and 19- being of the flexible jointed type topermit swinging of the vulcanizer section 12. The steam connections tothe molds are made through slots, such as indicated at 20, 20, in thevulcanizer sections 11 and 12.

For actuating the door section 12 of the vulcanizer, a double actingfluid pressure cylinder 21 is provided, this cylinder being mounted on aswivel mounting 22 on section 11. to adapt it to the hinge movement ofthe door 12 and having its piston 23 connected by piston rod 24 by meansof a pivot pin 25 to a bracket 26 mounted on door 12. Each head of clinder 21 is provided with a main duct 27 igure 13} on which is a checkvalve 28 closing to pressure within the cylinder and a small relief duct29 by-passing the valve to the piping connection 30 at the front end ofthe cylinder and to a piping connection 31 at the other end ofthecylinder. This provides a double acting cushioning or dash pot actionin the cylinder preventing sudden closing or opening movement of thedoor.

To assist in the opening of the door to break the adhesion of thevulcanized goods to the molds, a vulcanizer breaking cylinder 32 ismounted on the vulcanizer section 11 and its piston operates a plunger33 arranged to coact with a bracket 34 fixed onto the door 12. A pipeconnection 35 from line 31 is provided to supply fluid under pressure tothis cylinder. A valve 31 is provided on line 31, this valve normallybeing closed by a spring 31, the stem 31 thereofbeing arranged to beengaged by a set screw 31 on the cam member 43 to open the valve as thevulcanizer is unlocked.

The locking device for the vulcanizer comprises a fixed bayonet jointsocket member 36 on section 12 and a cooperating rotatable bayonet jointmember 37 secured on a rotatable shaft 38 journaled in a bearing 39 insection 11. Shaft 38 has an arm 40 secured thereto to which is connecteda link 41 having a follower 42 engaged in the cam slot 43 of a cammember 43 journaled on shaft 38. Link 41 is supported at its free end byan arm 41 pivoted onto section 11. Slot 43 is concentric with shaft 38except at the portion 43 which is designed to rotate shaft 38 throughlink 41 and arm 40 during the first part of the movement of cam member43 from the unlocked position to the locked position shown in thedrawings. A thrust hearing for the cam member 43 is provided at 44. andmember 43 carries pressure cam 45 engaging a cam 46 fixed on section 11.A spring 47on shaft 38 is interposed between the bayonet member 37 andthe section 11 to com ensate for the relative shifting of the sha t insection 11 under the action of the pressure cam which draws section 12against section 11.

To'actuate cam member 43, a fluid pressure cylinder 48 is provided, itbeing pivotally mounted at 49 on standard 10, and having its piston 50connected to cam 43 by red 51. Piston 50 is double acting, flexible,fluid pressure connections 52 beingmade to the cylinder at the top endthereof and flexible connections 53 being made to the cylinder at itsbottom end. A valve 52 is provided in piping 30 to connect line 52thereto, this valve normally being closed by a spring 52 and arranged tobe engaged and actuated to its open position shown (Figure 12) by beinmounted on vulcanizer section 11 in suc relation to a lug 52 fixed onthe door 12 of the vulcanizer to be engaged by said lug as the door 12of the vulcanizer shuts.

Supply of air or pressure medium to a tube or bag in a tube or tire moldis provided for by piping 54 extending into the vulcanizer throughsection 11 and having a pressure ga e 54 connected thereon.

be main operating and control mechanism includes a manually operablestarting lever 55 adapted to be held against operation by a manuallyoperable latch 55 whereby both of an operatives hands are required tostart the operating and control mechanism to function. Lever 55 isconnected by a link 56 to a lever 57 pivoted on the lever 58 of afour-way valve mechanism 59 (Figures 6 and 7). Lever 58 cooperates withfour valve stems in pairs of two respectively on the left and right ofthe valve mechanism (Figure .7), the pivot 58 for lever 58 being betweenthe pairs. The valve stems of the valve mechanism 59 are all urgedupwardly tending to hold the valves closed. The vaives at the left arenumbered 60 and 61 and those at the right 62 and 63. The former are forcontrolling supply of fluid under pressure to close and lock thevulcanizer and to start the timer, and the latter are for unlocking andopening the vulcanizer after the timer has operated a predeterminedtime. Valve 60 controls a port 60 for delivering air under pressuresuplied through a duct 64 to the chamber 65 neath said port to the frontchamber 66 of the valve and thus to piping 30 connected to the valve at30 and also to pipin 67 connected to the timer actuator as wi I bedescribed, and valve 61 controls a port at 61 from which air pressure inthe system connected by piping 31, 35, and 53, that is the rear ofcylinder 21, the breaking cylinder 32 and the bottom of the lockingcylinder 48 is relieved through the rear valve chamber 68 to an exhaustchamber 69 having an outlet at 70.

Vaive 62 controls a port at 62, which when open, delivers air underpressure from a chamber 71 below said port into the valve chamber 68 andfrom it into pipes 31, 35 and 53, and valve 63 controls a port 63" forconnecting chamber 66 and consequently connecting piping 30 and 67 to afront exhaust chamber 72 connected to the exhaust outlet 70. Duct 64connects the pressure chambers 65 and 71 and air under pressure may besupolied to pressure chamber 71 by a duct at 7 3 connected to a mainpressure line 74. (See Figure 12.)

A spring '75. acting on a rod 76 connected to. one end of valve lever58serves to urge the valve lever downwardly to the right (Figure 7) tohold valves 62 and 63 open and permitting valves and 61 to be kept shutby their springs. Lever 57 has a projection 57 thereon adapted to engagea shoulder 58' on lever '58 to actuate this lever to the position shownin the drawings to close and lock thevulcanizer and start the cure. Theleft end of lever 58. is provided at7 7 with a shoulder adapted to beengaged by a latch lever 78. to holdlever 58 depressed to the left, asshown, throughout a predetermined period; latch lever 78 being designedand freely pivoted to swing by gravity to a position above shoulder 77when lever 58 is depressed to the position shown. Latch 78 is mountedinrelation to and adapted to be controlled by a timer indicatedgenerally at 79.

Thetimer 79 (Figures 6, 7, 10 and 11) includes a spring drum 80 having aclock spring 81 therein, the outer end of which is secured to the drumand the inner end to a shaft 82 upon which the drum is journaled. Drum80 has a timer gear 83 securedthereto and meshed with a pinion 84 on atimer shaft 85. Shaft 85 has a worm gear 86 journaled therein and drivenby a worm 87 on theshaft 88 of a motor 89 which is continuously driven.Gear 86 drives an eccentric 90 thereon which is engaged with an,oscillatahle lever 91 pivoted at 92. Lever 91 has a pawl 93 pivoted onits upper end and adapted. to be urged. into engagement with a ratchetwheel 94; by a spring 95, an extension 93 on the pawl 93 being arrangedto be engaged by a pawl 96 pivoted at 96 to hold the pawl 93 out ofoperative engagement with, the

A ratchet 94'when the vulcanizer is open, during which time the lever 91oscillates to no eflect f Pawl 96 is so arranged as to be urged towardengagement with extension 93 of pawl 93 by means of a spring 97 and tobe urged out of engagement'therewith to permit operation of the timer bymeans of a piston 98 in a fluid pressure cylinder 99 comprisingthe timeractuator referred to pre- 0 viouslyas having'piping 67 connectedtheretof In the last-named position of pawl 96 as shown inthe drawingsit is adapted to engage with ratchet wheel 94 to prevent retrogrademovement thereof. 7

The timer gear 83 has apin or rollerthereon at 100 adapted to engagelatching lever 78 at the en d of a predetermined cure to release lever58 of. the valve mechanism. The time of cure is determined by theangular initial position of this roller with respect to the lever 78,the timer gear traveling counterclock-wise as appears from Figure 7 Thistimer gear is also designed for controlling supply of air to aninnertube, air bagor other inflatable objects, in the vulcani zer moldso that this air supply will be cut off before the vulcanizer is opened.Accordingly an arm 101 is secured to the spring drum and has a pin orroller 101 on its outer end adapted to engage a lever 102 of aninflation valve mechanism to be described (Figure 8) The roller 101 isemployed to cooperate also with an arm 103 fixed onto shaft 82 todetermine the initial setting of both rollers 100 and 101*. Shaft 82 isadapted to be rotated to set arm 103,. in any determinate angularposition by means of agear 10 1 meshed with a pinion 105 on a shaft 106operable to adjusted position by a crank 107 at the front of the timerwhich has a spring-pressed pin 108 thereon for engaging in apertures 109in an annular plate. 110. To indicate the adjustment of the timer, apinion 111 on shaft 106 is meshed with a gear 112 in back of the frontface of the timer, a peep hole 113 in said front face ofthe timerrendering visible calibrations 114: on the face of gear 112 which may benumbers representing minutes, the number appearing in the peep holerepresentingthe ad justed curing period in minutes. It will be. apparentthat when the pawls 93 and 96 are disengaged from the ratchet wheel 94,the spring 81 will return rollers 100 and 101? to their initialpositions in which. roller 101; is against the adjustable stop arm 103.If the timer for any reason should fail to function at the end of a.cure, continued rotation of the timer would cause. the trip arm 101 tocontinue past the inflation valve lever 102-into engagement withthetumbler 1150f a switch 11.6 to stop the motor89.

The inflation valve is indicated at 118, (see Figure 8) and the valvecontrol 102.is pivotally connected to the vulcanizer locking cylinder at102 and preferably comprises a main lever 102 and an auxiliarysection102 the latter being pivotedon the mainlever. at 102.

V The free end of thelever section 102 is adjustably connected to thefree end of the lever section 102 by means of a screw 117 threadedthrough the latter, whereby section 102 can be adjusted, relativelytoward and; from the timer, to vary the time between the. deflation ofthe inner tubes or other articles in the vulcanizer and the time ofopening of the vulcanizer, the former always being in. advance of thelatter. The main inflation pressure control lever 102 rests on a pin orroller 119 on an inflation valve actuating lever 119 and has a shoulderthereon at 102 shoulder, just before the vulcanizer is unlocked andopened by engagement of roller 101 with lever 102 to raise it,permitting.

pin 119 to travel, under the edge 102 ofL lever 102 as the inflationvalve isclosed'andi the pressurein the tube relieved s e i 120 acting ona rod 121 connected to lever 119 urges the lever 119 into engagementwith valve stem 122 against the action of its spring 123 to open therelief port 124 of valve 118 and to permit the spring 125 acting onvalve stem 126 to close the supply port 127. Chamber 128 in valve 118 isa. supply chamber to which pressure line 74 is connected. Chamber 129 isconnected to piping 54, being arranged to be connected either to thesupply or the exhaust by actuator valve stems 126 and 122 respectively.

In operation the vulcanizing molds are ke t hot at all times and thearticle to be vu canized such as a tube, is mounted in the mold section18 while the vulcanizer is open, the tube being partially inflated ifdesired to assist in placing in the mold. The safety catch 55 is engagedby one hand of the operator to release lever 55 and lever 55 is engagedby the other hand and swung to the eft (Figure 1) to operate valve 59 tothe position thereof indicated in the drawings (Figures 7, 7 and 7 inwhich position it is retained by pawl 58. Air under pressure isaccordingly supplied to piping 30 and 67 and relieved from piping 81 and53 by valve 59. This causes the door 12 of the vulcanizer to shut andactuates the timer cylinder 99 to start timing of the cure as shown inFigure 11.

As the door 12 of the vulcanizer shuts, valve 52 is opened supplyingpressure to line 52 and accordingly to the upper end of vulcanizerlocking cylinder 48.

The first operation performed by the locking mechanism is to turnbayonet joint member 37 in the socket 36 into locked engagement as shownin Figure 4. This is accomplished by the cam slot portion 43 throughlink 41 and arm 40. Cams 45 and 46 then become operative and draw thesections tightly together under great pressure, the mold sec tionseffectively seating upon each other.

As the vulcanizer is locked, shoulder 102 on lever 102 is actuated intoengagement with in 119" of inflation valve lever 119 by swinging of thecylinder 48 to the left (Figures -1 and 8). This causes air underpressure to be supplied through the inflation valve 118 to the piping54, which is connected to the tube in the vulcanizer by a suitable typeof connection generally used for this purpose (not shown).

The curing of the tube continues for the time set by adjustment of thetimer, toward the end of which roller 101 engages lever 102 to releasevalve lever 119 permitting valve 118 to disconnect pressure supply tothe inner tube and to relieve the pressure line 54 upon which roller 100engages pawl 7 8 to release valve lever 58. Pressure in lines 30 and 67is thus relieved, the spring 97 acting on the piston 98 to disengagepawls 96 and 93 from the timer ratchet 94, thus disconnecting the timerfrom its driving motor and pressure is turned into lines 31 and 53. Thisfirst actuates piston 50 in cylinder 48 causing the former to unlock thevulcanizer, and as cylinder 48 swings to the unlocked position thereofthe set screw 31 on cam member 43 engages the valve stem 31* of valve 31opening said valve to admit air under pressure to the rear of the dooractuating cylinder 21 and also through branch line 35 to the breakingcylinder 32, whereby the vulcanizer is opened and the vulcanized articleremoved.

Modifications of the invention may be resorted to without departing fromthe spirit thereof or the scope of the appended claims.

What is claimed is:

1. Vulcanizing apparatus com rising a fixed section and a section hingethereon, means for locking said sections together, said means comprisingbayonet oint members respectively carried by the sections, the bayonetjoint member on the fixed section being secured on a shaft journaled inthe fixed section, a cam member journaled on said shaft, an arm securedto the shaft, a link connected to the arm and adapted to be actuated bythe cam member to rotate the shaft, and cooperating cams respectively onthe cam member and the fixed section for drawing the sections togetherwhen the bayonet joint members are engaged, valve controlled means forinflating an article in the vulcanizer, a lever for actuating theinflation valve when the bayonet joint members are actuated, and meansfor actuating the cam member comprising a pivoted cylinder, a doubleacting piston therein and a connecting rod between the piston and thecam member, said lever being connected to said pivoted cylinder.

2. Vulcanizing apparatus comprising a fixed section and a section hingedthereon, means for locking said sections together, said means comprisingbayonet joint members respectivela' carried by the sections, the bayonetjoint member on the fixed section being secured on a shaft journaled inthe fixed section, :1 cam member journaled on said shaft, an arm securedto the shaft, alink connected to the arm and adapted to be actuated bythe cam member to rotate the shaft, and cooperating cams respectively onthe cam member and the fixed section for drawing the sections togetherwhen the bayonet joint members are engaged, and means for actuating thecam member comprising a pivoted cylinder, a double acting piston thereinand a connecting rod between the piston and the cam member.

Vulcanizing apparatus comprising a fixed section and a section hingedthereon,

means for locking said sections together, said means comprising bayonetjoint members respectively carried by the sections, the bayonet jointmember on the fixed section being secured on a shaft journaled in thefixed section, a cam member journaled on said shaft,

an arm secured to the shaft, a link connected tothe aim and adapted tobe actuated by the cam member to rotate the shaft, and c operating camsrespectively on the cam member and the fixedsection for drawing thesections together when the bayonet joint members areengaged, valvecontrolled means for inflating an article in the vulcanizer, a lever foractuating the inflation valve when the bayonet joint members areactuated, and

means for actuating the cam member and lever.

4. Vulcanizing apparatus comprising a fixed section and a section hingedthereon, means for locking said sections together, said means comprisingbayonet joint members respectively carried by the sections, the bayonetjoint member on the fixed section being secured on a shaft journaled inthe fixed sec- 2 tion, a cam member journaled on said shaft,

an arm secured to the shaft, a link connected to the arm and adapted tobe actuated by the cam member to rotate the shaft, and co operating camsrespectively on the cam memher and the fixed section for drawing thesections together when the bayonet joint members are engaged, and meansfor actuating the cam member.

5. Vulcanizing apparatus comprising relatively movable sections, meansfor locking said sections together, said means comprising bayonet jointmembers respectively carried by the sections, the bayonet oint member onthe one section being secured on a shaft journaled in the said section,a cam member journaled on said shaft, an arm secured to the shaft, alink connected to the arm and adapted to be actuated by the cam memberto rotate the shaft, and cooperating cams respectively on the cam memberand the fixed section for drawing the sections together when the bayonetoint members are engaged, valve controlled means for inflating anarticle in the vulcanizer, a lever for actuating theinflation valve whenthe bayonet joint members are actuated, and means for actuating the cammember comprising a pivoted cylinder, a double acting piston therein anda connecting rod between the piston and the cam member, said lever beingconnected to said pivoted cylinder.

6. Vulcanizing apparatus comprising relatively movable sections, meansfor locking said sections together, said means comprising bayonet jointmembers respectively carried by the sections, the bayonet joint memberon the one section being secured on a shaft journaled in the saidsection, a cam member journaled on said shaft, an arm secured to theshaft. a link connected to the arm and adapted to be actuated by the cammember to rotate the shaft, and cooperating cams respectively on the cammember and the fixed section for drawing the sections together when thebayonet joint members are engaged,

and means for actuating the cam member comprising a pivoted cylinder, adouble acting piston therein and a connecting rod between the piston andthe cam member.

7. Vulcanizing apparatus comprising relatively movable sections, meansfor locking said sections together, said means comprising bayonet jointmembers respectively carried by the sections, the bayonet joint memberon the one section being secured on a shaft journaled in the saidsection, a cam member j ournaled on said shaft, an arm secured to theshaft, a link connected to the arm and adapted to be actuated by the cammember to rotate the shaft, and cooperating cams respectively on the cammember and the fixed section for drawing. the sections together when thebayonet joint members are engaged, valve controlled means for inflatingan article in the vulcanizer, a lever for actuating the inflation valvewhen the bayonet joint members are actuated, and means for actuating thecam member and lever; j

8. Vulcanizing apparatus comprising relatively movable sections, meansfor locking said sections together, said means comprising bayonet jointmembers respectively carried by the sections, the bayonet joint memberon the one section being secured on a shaft journaled in thesaidsection, a cam member journaled on said shaft, an arm secured to theshaft, a link connected to the arm and adapted to be actuated by the cammember to rotate the shaft, and cooperating cams respectively on the cammember and the fixed section for drawing the sections together when thebayonet joint members are engaged, and means for actuating the cammember.

9. Vulcanizing apparatus comprising hinged sections, bayonet jointmembers respectively on the sections for locking the sections together,means for actuating the bayonet oint members relatively to and fromlocked engagement, and means operable by said first means when thebayonet joint member are engaged for drawing the sections together underpressure by means of the bayonet oint members.

10. Vulcanizing apparatus comprising relatively movable sections, meansfor locking the sections together, means for drawing the sectionstogether under pressure through the lockingrmeans, and means foractuating the locking means comprising a cam member having cams thereonfor actuating both of said means in succession.

11. Vulcanizing apparatus comprising relatively movable vulcanizersections, means for locking the sections together, means for drawing thesections together under pressure, and a single means for actuating thelocking means and the drawing means, said means comprising a movable cammember having cam means thereon effective on the locking means over onepart of its movement and other cam: means efl'ective on the drawingmeans over the other part of its move- 7 ment.

12. Vulcanizing apparatus comprising relatively movable vulcanizersections, means for locking the sections together, means for drawing{the sections together under pressure, and a single means for actuatingthe locking means and the drawing means, said means comprising a movablemember having cam means thereon effective on the locking means over onepart of its movement and other cam means effective on the drawing meansover the other part of its movement.

13. Vulcanizing apparatus comprising relatively movable sections,bayonet means for lockin the sections together, means for drawing thesections together under pressure through the locking means by relativelongitudinal movement only of the locking means, and means for actuatingthe locking means comprising a movable member actuating both of saidmeans in succession.

14. "Vulcanizing apparatus comprising relatively movable sections,bayonet means for locking the sections together under pressure, andmeans fer first actuating the locking means into locked engagement andthen drawing the sections together under pres sure thereby by relativelongitudinal movement only of the locking means.

15. Vulcanizing apparatus comprising rel-'' atively movable vulcanlzersections, bayonet": a I

each 0?; the said several instrumentalities and means for locking thesections together, additional means for drawing the sections togetherunder pressure, and a single "means for actuating the locking means andthe drawing means, said means comprising a movable member having meansthereon effective on the locking means over one part of its movement andother means effective onthe drawing means over the other part of itsmovement, I

16. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for breaking the vulcanizersections to assist'in opening thereof, means for locking and unlockingthe sections, means for drawing the sections together under pressurethrough the locking means, means for inflating and deflating an articlein'the vu'lcanizer; a timer for controlling the sequence of operation ofthe several instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentaiities and said timer, asingle such actuating means operating both the locking arid drawingmeans, a main control valve for controlling the supply of fluid underpressure to said instrumentalities and said timer, connections from saidmain control vaive to each of said instrumentalities canizer and startthe timer, a valve 'in the connection to the vulcanizer locking actu-'ating means operable by closing of the vulcanizer to actuate saidlocking means, a

operabie by locking of the vulcanizer to inflate the article therein,means for batch ing the main valve to maintain the vulcanizerzclosed,locked and the article' there- 1 in inflated, said latching means beingoperable by the timer to release the main valve after apredetermined'cure to actuate the vulcanizer locking and unlockingmeans, whereby the vulcanizer will be unlocked, means operable by thetimer to actuate the valve in the inflation connections so as to deflatethe article in the Vulcanizer prior to unlocking thereof, a valve in theconnections to the actuator of the vuleanizer closing and opening meansand the breaking means, said last named valve being operable b unlockingof the vulcanizer to cause said c osing and opening means to open thevulcanizer. Z

17. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for locking and unlocking thesections, means for drawin the sections together under pressure througiithe locking means, means for inflating and deflating an article in thevulcanizer, a timer for controlling the sequence of operation of theseveral instrumentalities set forth above, fluid pressure means foractuating said timer, a single such actuating means operating both thelocking and drawing means, a main control valve for controlling valve inthe connection to the inflating means,

instrumentalities and said timer, manually the vulcanizer locking andunlocking means, 1

whereby the vulcanizer will be unlocked. means operable by the timer toactuate the valve in the inflation connections so as to deflate-thearticle in the vulcanizer prior to unlocking thereof, a valve in theconnections to the actuator of the vulcanizer closing and opening means,said last named valve being operable by unlocking of the vulcanizer tocause said closing and opening means to open the vulcanizer. I Y

18. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for breaking the vulcanizersections to assist in opening thereof, means for locking and unlockingthe sections, means for drawing the sections together under pressurethrough the lock ing means, a timer for controlling the sequence ofoperation of the several instrumentalities set forth above, fluidpressure means for actuating each of the said several instrumentalitiesand said timer, a single such actuating means operating both the canizerto actuate said locking means, means for latching the main valve tomaintain the vulcanizer closed and locked, said latching means beingoperable by the timer to release the main valve aft-er a predeterminedcure to actuate the vulcanizer locking and unlocking means, whereby thevulcanizer will be unlocked, a valve in the connections to theactuatorof the vulcanizer closing and opening means and the breaking means, saidlast named valve being operable by unlocking of the vulcanizer to causesaid closing and open+ ing means to open the vulcanizer.

19. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for locking and unlocking thesections, means for drawing the sections together under pressure throughthe locking means, a timer for controlling the sequence of operation ofthe several instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentalities and said timer, asingle such actuating means operating both the locking and drawingmeans, a main control valve for controlling the supply of fluid underpressure to said instrumentalities and said timer, connections from saidmain control valve to each of said instrumentalities and said timer,manually operable means for actuating the control valve to close thevulcanizer and start the timer, a valve in the connection to thevulcanizerlocking actuating means operable by closing of the vulcanizerto actuate said locking means, means for latching the main valve tomaintain the vulcanizer closed and locked, said latching means beingoperable by the timer to release the main valve after a predeterminedcure to actuate the vulcanizer locking and unlocking means, whereby thevulcanizer will be unlocked, a valve in the connections to the actuatorof the vulcanizer closing and opening means, said last named valve beingoperable by unlocking of the vulcanizer to cause said closing andopening means to open the vulcanizer.

20. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for breaking the vulcanizersections to assist in opening thereof, means for locking and unlockingthe sec-. tions, means for inflating and deflating an article in thevulcanizer, a timer for controlling the sequence of operation of theseveral instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentalities and said timer, amain control valve for controlling the supply of fluid under pressure tosaid instrumentalities and said timer, connections from said maincontrol valve to each of said instrumentalities andsaid timer, manuallyoperable means for actuating. the control valve to close the vulcanizerand start the timer, a valve in the connection to the vulcanizer lockingactuating means operable by closing of the vulcanizer to actuate saidlocking means, a valve in the connection to the inflating means operableby locking of the vulcanizer to inflate the article therein, means forlatching the main valve to maintain the vulcanizer closed, locked andthe article therein inflated, said latching means being operable by thetimer to release the main valveafter a predetermined cure to actuate thevulcanizer locking and unlocking means, whereby the vulcanizer will beunlocked, means operable by the timer to actuatethe valve in theinflation connections so as to deflate the article in the vulcanizerprior to unlocking thereof, a valve in the connections to the actuatorof the vulcanizer closing and opening means and the breaking means, saidlast named valve being operable by unlocking of the vulcanizer to causesaid closing and opening means to open the vulcanizer.

21. In a vulcanizer comprising relatively movable sections, means forclosing and open ing the sections, means for locking and unlocking thesections, means for inflating and deflating an article in thevulcanizer, a timer for controlling the sequence of operation of theseveral instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentalities and said timer, amain control valve for controlling the supply of fluid under pressure tosaid instrumentalities and said timer, connections from said maincontrol valve to each of said instrumentalities and said timer, manuallyoperable means for actuating the control valve to close the vulcanizerand start the timer, a valve in the connection to the vulcanizer lockingactuating means operable by closing of the vulcanizer to actuate saidlocking means, a valve in the connection to the inflating aid meansoperable by locking of the vulcanizer to inflate the article therein,means for latching the main valve to maintain the vulcanizer closed,locked and the article therein inflated, said latching means beingoperable by the timer to release the main valve after a predeterminedcure to actuate the vulcanizer locking and unlocking means, whereby thevulcanizer will be unlocked, means operable by the timer to actuate thevalve in the inflation connections so as to deflate the article in thevulcanizer prior to unlocking thereof, a valve in the connections to theactuator of the vulcanizer closing and opening means, said last namedvalve being operable by unlocking of the vulcanizer to cause saidclosing and opening means to open the vulcanizer.

22. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for breaking the vulcanizersections to assist in opening thereof, means for locking and unlockingthe sections, a timer for controlling the sequence of operation of theseveral instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentalities and said timer, amain control valve for controlling the supply of fluid under pressure tosaid instrumentalities and said timer, connections from said maincontrol valve to each of said instrumentalities and said timer, manuallyoperable means for actuating the control valve to close the vulcanizerand start the timer, a valve in the connection to the vulcanizer lockingactuating means operable by closing of the vulcanizer to actuate saidlocking means, means for latching the main valve to maintain thevulcanizer closed and locked, said latching means being operable by thetimer to release the main valve after a predetermined cure to actuatethe vulcanizer locking and unlocking means, whereby the vulcanizer willbe unlocked, a valve in the connections to the actuator of thevulcanizer closing and opening means and the breaking means, said lastnamed valve being operable by unlocking of the vulcanizer to cause saidclosing and opening means to open the vulcanizer.

23. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for locking and unlocking thesections, a timer for controlling the sequence of operation of theseveral instrumentalities set forth above, fluid pressure means foractuating each of the said several instrumentalities and said timer, amain control valve for controlling the supply of fluid under pressure tosaid instrumentalities and said timer, connections from said maincontrol valve to each of said instrumentalities and said timer, manuallyoperable means for actuating the control valve to close the vulcanizerand start the timer, a valve in the connection to the vulcanizer lockingactuating means operable by closing of the vulcanizer to actuate saidlocking means, means for latching the main valve to maintain thevulcanizer closed and locked, said latching means being operable by thetimer to release the main valve after a predetermined cure to actuatethe vulcanizer locking and unlocking means, whereby the vulcanizer willbe unlocked, a valve in the connections to the actuator of thevulcanizer closing and opening means, said last named valve beingoperable by unlocking of the vulcanizer to cause said closing andopening means to open the vulcanizer.

24. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for breaking the vulcanizersections to assist in opening thereof, means for inflating and deflatingan article in the vulcanizer, a timer for controlling the sequence ofoperation of the several instru mentalities set forth above, fluidpressure means for actuating each of the said several instrumentalitiesand said timer, a main control valve for controlling the supply of fluidunder pressure to said instrumentalities and said timer, connectionsfrom said main control valve to each of said instrumentalities and saidtimer, manually operable means for actuating the control valve to closethe vulcanizer and start the timer, a valve in the connection to theinflating means operable when the vulcanizer is closed to inflate thearticle therein, means for latching the main valve to maintain thevulcanizer closed, locked, said latching means being operable by thetimer to release the main valve after a predetermined cure to cause saidbreaking means to break, the vulcanizer and said closing and openingmeans to open the vulcanizer, and means operable by the timer to actuatethe valve in the inflation connections so as to deflate the article inthe vulcanizer prior to opening thereof.

25. In a vulcanizer comprising relatively movable sections, means forclosing and opening the sections, means for inflating and deflating anarticle in the vulcanizer, a timer for controlling the sequence ofoperation of the several instrumentalities set forth above, fluidpressure means for actuating each of the said several instrumentalitiesand said timer, a main control valve for controlling the supply of fluidunder presure to said instrumentalities and said timer, connections fromsaid main control valve to each of said instrumentalities and saidtimer, manually operable means for actuating the control valve to closethe vulcanizer and start the timer, a valve in the connection to theinflating means operable when the vulcanizer is closed to inflate thearticle therein, means for latching the main valve to maintain thevulcanizer closed, locked, said latching means being operable by thetimer to release the main valve after a predetermined cure to cause saidclosing and opening means to open the vulcanizer, and means operable bythe timer to actuate the valve in the inflation connections so as todeflate the article in the vulcanizer prior to opening thereof.

26. In a vulcanizer comprising relatively movable vulcanizer sections,means for clos ing and opening the sections, means actuated by closingof the sections to lock the sections and to draw the sections togetherunder pressure, means operable by locking the sections to inflate anarticle in the vulcanizer, a timer means to set the timer in operationupon closing of the sections, means actuated by the timer after apredetermined time of cure for deflating the article in the vulcanizerand unlocking the sections and for stopping operation of the timer, andmeans operable by the unlocking of the sections for operating theclosing and opening means to open the vul canizer.

27. In a vulcanizer comprising relative movable vulcanizer sections,means for closing and opening the sections, means actuated by closing ofthe sections to lock the sections, means operable by lockingthe sectionsto in flate an article in the vulcanizer, a timer, means to set thetimer in operation upon closing of the sections, means actuated by thetimer after a predetermined time of cure for deflating the article inthe vulcanizer and un- I looking the sections and for stoppingoperationof the timer, and means operable by the unlocking of thesections for operating the closing and opening means to open thevulcamzer.

28. In a vulcanizer comprising relative movable vulcanizer sections,means for closing and opening the sections, means actuated by closing ofthe sections to lock the sections, a timer, means to set the timer inoperation upon closing of the sections, means actuated by the timerafter a predetermined time of cure for unlocking the sections and forstopping operation of the timer, and means operable by the unlockingofthe sections for operating the closing and opening means to open thevulcanizer. V I

29. In a vulcanizer comprising relative movable vulcanizer sections,means for clos ing and opening the sections, means operable by locln'ngthe sections to inflate an article in the vulcanizer, a timer, means toset the timer in operation upon closing of the sections, means actuatedby the timer after a predeterined time of cure for deflating the articlein the vulcanizer and for stopping operation of the timer, and meansoperable when operation of the timer is stopped for operating theclosing and opening means to open the vulcamzer.

30. In a vulcanizer comprising relative movable vulcanizer sections,means for closing and opening the sections, a timer, means operable whenoperation of the timer is stopped for operating the closing and openmgmeans to open the vulcanizer.

HENRY C. BOSTWICK.

